Wrinkle flexible material with rubber latex coating and method of producing same



l atenteci May 16, 1956 WRI'NKLE FLEXIBLE MATERIAL, BER, LATEX COATING METHQQ PRODUCING sa vm Nathan T. Beynon, Eleveland, ()liio, assignortm New Wrinkle, Inc., WilmingtomjDeL;*apcorpo:

rationrofDelaware No Drawing. Original application March 7,

' 1946;Serial No. 652,819. Divided andtliis ap plication'May 28;"1948, Seri'alNo'. 29,9301? 1 This application is a division'of my copending application Serial:- Number 652319, filed March 7, 1946, now Patent No. 2,456,671.

This invention relatesto wrinkle coated flexible materials andthe method of making them. Hitherto wrinkle drying; coating compositions have' been oftwo types: varnish type and alkyd type; v i

Varnish typewrinkle drying coating compositions consist essentiallyof a varnish base ineluding a'wrinkling oil in admixture with drier and solvent, while alkyd base wrinkle drying coatin compositions consist essentially of an alkyd resin in admixture with drier and a 'sol'-' vent.

The production of :both varnish base and alkyd basewrinkle drying coating com-positions requires the use ofcooking facilities. 'Thepurpose of the present invention 'is toproduce anew type of wrinkle drying coating composition wherein the cooking step is completely dispensed with and to utilize such compositions for the manu facture'ofwrinkle coated fiexible'mfaterialsi' In other words, the coating compositions which are to be used according tothe present invention are prepared by compounding the componehtparts thereof without the necessity of cooking;

For this purpose a wrinkling-oil (that is to say, anoil which includes conjugated. double bonds i'ri' its chemical structure) is admixed with an aqueous dispersion of polyvinyl chloride latex in a ratio of from partsto 50 parts of it per 160 parts of wrinkling oil,

To the resulting mixture may be added, if so desired, from 4010 80 7, bfa pigment paste comprising for example, two-thirds pigment and onethird wrinkling oil by weight. This pigment paste is thoroughly blended into the mixture of polyvinyl chloride latex and wrinkling oil to produce a homogeneous composition.

To this homogeneous composition is added a quantity of solvent such as naphtha, toluol, xylol, or mixtures thereof, or any other solvent such as customarily employed in varnish formulations, in quantity suflicient to produce a coating of the desired viscosity.

For example, a coating of suitable viscosity for application by spreading may consist of 40 parts by weight of polyvinyl chloride latex, 100 parts by weight of wrinkling oil, 60 parts by weight of pigment paste, and 10 parts by weight of naphtha.

The use of polyvinyl chloride latex in admixture with wrinkling oils for producing wrinkle drying coating composition is new in the art; in fact, it has been hitherto considered impossible to use 9 Claims, (01. 111-41) polyvinyl chloride latexin rinkle, dryinga'c'oating compositions o'f any sort. because" the polyvinyl chloride latex acted arr'inlnbi'tor oi wrinkle for;

rnjtio'n'.

"Wrinkle patters=or textureshitherto; unobtainje able may be produced varying the amountofspoiy vinyl chloride latex employed in the 'ionmilatien. In addition; this-new type oi: wrinkle diy coating compositilin includi'ng' polyvinyllchloride latexresponds to temperature-variation during the initiahdr-ying or texturirlg period to sucln' an extent that a great variety o'f 'texturesor patterns may be-obtai-nedz' It is believed that the underlying theory govenr ingthe production ofwrinkletidryingicoating am: position including polyvinyl chloride latex follows:

The mixture of polyvinyl chloride latex and wrinkling oil consists of two components which are compatibleeach other; However; during the drying or 'filrir-iorn'iingfiperiod these ingredfents separate into distinct "phases, and thereby the texture'ofthe WrinkIe patterh'is altered de pending onthe relative-proportion or ratio of the two component parts". It be understood, or course; that this theory is offered'merely' -in expl'anation of observed factsand that-teacher inten ded-therebyto limit this invention.

'ili'e polyvinyl chloride Flatexfmay be employed successfully m rane rrrem l"0 parts-W of latex to; each parts of Wfrl-hklingml, =an has'b'een so=einpiloyed in the practice-oi this v men. A latex'coricen ation of solids been iound-most suitalbli" asbeeh acres he-rinbefore, wrinkling oils are oils which include conjugated double bonds in their chemical structure. tive oils such as tung oil and oiticica oil, or they may be modified oils such as dehydrated castor oil (either blown or unblown), blown linseed oil and alkali isomerized oils prepared from normally non-drying oils such as peanut oil and cottonseed oil, or they may be any other type of unsaturated iatty oil.

It has been found that wrinkle drying compositions made according to the method described above are qualified par excellence for the manufacture of wrinkle coated flexible materials. Thus, paper, fabrics, leather, cork, and other similar flexible materials may be successfully coated with these uncooked polyvinyl chloride latex-wrinkling oil mixtures, and materials are obtained thereby in which the flexibility has been retained completely or to an unusually high degree.

They may be na- The compositions may be applied by spraying, spreading and rolling. The resulting film is then dried in an oven or other drying equipment known to those skilled in the art. An initial dryin step at 130 F. for 30 minutes and subsequent drying at 180 F. for a period of from 30 to 60 minutes, for example has been found to give very satisfactory results.

The polyvinyl chloride latex-wrinkling oil coating composition may be applied immediately to the flexible base material. However, intermediary, so-called base coats known to the art, either in one single layer or in multiple layers, may be applied prior to using the wrinkle coatins proper.

It will be understood that while there have been given herein certain specific examples of the practice of this invention, it is not intended thereby to have this invention limited to or circumscribed by the specific details of materials, proportions,v or conditions herein specified, in

view of thefact that this invention may be modified according to individual preference or conditions without necessarily departing from the spirit of this disclosure and the scope of the appended claims.

.Ilclaim:

1. The method of manufacturing flexible, wrinkle-coated materials comprising the steps of .mixing at room temperature 100 parts by weight of unsaturated fatty oil with varnish solvent and from to 50 parts by weight of aqueous dispersion of polyvinyl chloride latex; applying the mixture thus obtained to a base material; and subjecting the coated material to dryand subjecting the coated material to drying.

3. The method of manufacturing flexible, wrinkle-coated materials comprising the steps of at room temperature 100 parts by weight of unsaturated fatty oil with varnish solvent and from 10 to 50 parts by weight of aqueous dispersion of polyvinyl chloride latex; admixing pigment paste to the mixture, said pigment paste comprising two-thirds by weight of pigment and one-third by weight of unsaturated fatty oil; applyingthe mixture thus obtained to a base material; and subjecting the coated material to drying.

4. The method of manufacturing flexible wrinkle-coated materials comprising the steps of mixing at room temperature 100 parts by weight of unsaturated fatty oil vnth varnish solvent and from 10 to 50 parts by weight of aqueous dispersion of polyvinyl chloride latex; admixing from 40 to parts by weight of pigment paste to the mixture; applying the mixture thus obtained to a, base material; and subjecting the coated material to drying.

5. The method of manufacturing flexible, wrinkle-coated materials comprising the steps of mixing at room temperature parts by weight of unsaturated fatty oil with varnish solvent and from 10 to 50 parts by weight of aqueous dispersion of polyvinyl chloride latex; applying the mixture thus obtained to a base material; and subjecting the coated material to drying at substantially F. for approximately 30 minutes and then substantially F. for a period of from about 30 to 60lminutes.

6. A flexible wrinkle-coated material comprising a flexible base and a dried coating thereon, said coating having been mixed at room temperature from 100 parts by weight of unsaturated fatty oil and from 10 to 50 parts by weight of aqueous dispersion of polyvinyl chloride latex.

7. A flexible, wrinkle-coated material comprising a flexible base and a coating thereon, said coating having been mixed at room temperature from 100 parts by weight of unsaturated fatty oil, from 10 to 50 parts by weight of aqueous dispersion of polyvinyl chloridelatex and pigment paste.

8. A flexible, wrinkle-coated material comprising a flexible base and a coating thereon, said coating having been mixed at room temperature from 100 parts by weight of unsaturated fatty oil, 10 to 50 parts by weight of aqueous dispersion of polyvinyl chloride latex and 40 to 80 parts by weight of pigment paste.

9. A flexible, wrinkle-coated material comprising a flexible base and a coating thereon, said coating having been mixed at room temperature from 100 parts by weight of unsaturated fatty oil, from 10 to 50 parts by weight of aqueous dispersion of polyvinyl chloride latex and pigment paste consisting of two-thirds by weight of pigment and one-third by weight of said 011.

NATHAN T. BEYNON.

No references cited. 

1. THE METHOD OF MANUFACTURING FLEXIBLE, WRINKLE-COATED MATERIALS COMPRISING THE STEPS OF MIXING AT ROOM TEMPERATURE 100 PARTS BY WEIGHT OF UNSATURATED FATTY OIL WITH VARNISH SOLVENT AND FROM 10 TO 50 PARTS BY WEIGHT OF AQUEOUS DISPERSION OF POLYVINYL CHLORIDE LATEX; APPLYING THE MIXTURE THUS OBTAINED TO A BASE MATERIAL; AND SUBJECTING THE COATED MATERIAL TO DRYING. 